L-DC Regional ITS Architecture

Functional Requirements

Functional requirements are a description of WHAT the system has to do. In the architecture, functions are defined at several different levels. Each inventory element is mapped to one or more subsystems and terminators from the National ITS Architecture. The general descriptions associated with these entities identify functionality in a very general sense. At the next level of detail, most of the ITS elements have been mapped to one or more "Functional Areas" that provide additional functional detail. At the most detailed level, each functional area includes several specific Functional Requirements that precisely specify the functions to be performed. All three levels of detail are available on this web site. The subsystems and functional areas that are associated with the regional ITS architecture are listed in the table below. Each table entry is a link to more detailed descriptions and functional requirements.

Subsystem	Functional Area
Archived Data Management	Government Reporting Systems Support
	ITS Data Repository
	On-Line Analysis and Mining
	Traffic and Roadside Data Archival
Emergency Management	Emergency Call-Taking
	Emergency Data Collection
	Emergency Dispatch
	Emergency Evacuation Support
	Emergency Response Management
	Emergency Routing
	Emergency Transportation Operations Data Collection
	Incident Command
	Service Patrol Management
Emergency Vehicle	On-board EV En Route Support
	On-board EV Incident Management Communication
Information Service Provider	Basic Information Broadcast
	Infrastructure Provided Trip Planning
	Interactive Infrastructure Information
	ISP Data Collection
	ISP Emergency Traveler Information
	ISP Operational Data Repository
	ISP Traveler Data Collection
	Traveler Telephone Information
Maintenance and Construction Management	MCM Data Collection
	MCM Environmental Information Collection
	MCM Environmental Information Processing
	MCM Incident Management
	MCM Maintenance Decision Support
	MCM Roadway Maintenance and Construction
	MCM Transportation Operations Data Collection
	MCM Vehicle Tracking
	MCM Winter Maintenance Management
	MCM Work Activity Coordination
	MCM Work Zone Management
	MCM Work Zone Safety Management
Maintenance and Construction Vehicle	MCV Vehicle Location Tracking
	MCV Winter Maintenance
	MCV Work Zone Support
Parking Management	Parking Data Collection
	Parking Electronic Payment
	Parking Management
Payment Administration	Toll Administration
Remote Traveler Support	Remote Basic Information Reception
	Remote Interactive Information Reception
	Remote Transit Information Services
Roadway	Roadway Basic Surveillance
	Roadway Environmental Monitoring
	Roadway Equipment Coordination
	Roadway Mixed Use Sensing
	Roadway Signal Controls
	Roadway Signal Preemption
	Roadway Signal Priority
	Roadway Traffic Information Dissemination
	Roadway Warning
	Roadway Work Zone Traffic Control
	Standard Rail Crossing
Roadway Payment	Toll Plaza Toll Collection
Traffic Management	Collect Traffic Surveillance
	TMC Environmental Monitoring
	TMC Evacuation Support
	TMC Incident Dispatch Coordination/Communication
	TMC Regional Traffic Management
	TMC Roadway Warning
	TMC Signal Control
	TMC Traffic Information Dissemination
	TMC Transportation Operations Data Collection
	TMC Work Zone Traffic Management
	Traffic Data Collection
	Traffic Equipment Maintenance
Transit Management	Transit Center Fare Management
	Transit Center Fixed-Route Operations
	Transit Center Information Services
	Transit Center Multi-Modal Coordination
	Transit Center Paratransit Operations
	Transit Center Passenger Counting
	Transit Center Security
	Transit Center Vehicle Tracking
	Transit Data Collection
	Transit Evacuation Support
	Transit Transportation Operations Data Collection
	Transit Vehicle Assignment
	Transit Vehicle Operator Assignment
Transit Vehicle	On-board Maintenance
	On-board Paratransit Operations
	On-board Passenger Counting
	On-board Schedule Management
	On-board Transit Fare Management
	On-board Transit Security
	On-board Transit Signal Priority
	On-board Transit Trip Monitoring
Vehicle	Vehicle Toll/Parking Interface